diff --git a/packages/rest/src/manager.ts b/packages/rest/src/manager.ts
index 7460d937d..8a6835a33 100644
--- a/packages/rest/src/manager.ts
+++ b/packages/rest/src/manager.ts
@@ -1,6 +1,6 @@
 /* eslint-disable @typescript-eslint/restrict-template-expressions */
 /* eslint-disable no-const-assign */
-import { calculateBits, camelToSnakeCase, camelize, delay, getBotIdFromToken, logger, processReactionString, urlToBase64 } from '@discordeno/utils'
+import { calculateBits, camelToSnakeCase, camelize, delay, getBotIdFromToken, logger, processReactionString, urlToBase64, snakelize } from '@discordeno/utils'
 
 import { createInvalidRequestBucket } from './invalidBucket.js'
 import { Queue } from './queue.js'
@@ -175,7 +175,7 @@ export function createRestManager(options: CreateRestManagerOptions): RestManage
           form.append(`file${i}`, options.files[i].blob, options.files[i].name)
         }
 
-        form.append('payload_json', JSON.stringify({ ...options.body, files: undefined }))
+        form.append('payload_json', JSON.stringify(snakelize({ ...options.body, files: undefined })))
 
         body = form